COMe-bKL6 – User Guide Rev.1.2
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Sub-Screen
Function
Second level Sub-Screen / Description
CSM
Configuration>
(continued)
CSM Support>
(continued)
Note: ‘Network’ must be changed to’ Legacy’ for legacy boot. (Default
setting is ‘Do not launch’).
[Enabled, Disabled]
Additional Information CSM:
Compatibility Support Module (CSM) configuration is important for legacy operating systems
By default, CSM is disabled for modern OS such as Windows 8, 10 and Linux.
If a legacy OS is used or a Windows or Linux system is run in legacy mode then this menu
allows for detailed option settings.Note, a change in settings only come into effect after the
next restart. Therefore, to be able to use the actualized settings, it is recommended to save and
exit the setup and re-enter.
The ‘Optional ROM Execution’ settings requires special care. Any OS using an INT10 based
display output needs the ‘Video’ option set to ‘Legacy’, in the same way that PXE boot needs
‘Network’ ‘Optional ROM’ to be set to ‘Legacy’.
NVMe
Configuration>
Read only field
Acts as a message showing NVMe (Non-Volatile memory PCIe) devices connected to the
system.
[NO NVME Device Found]
Switchable
Graphics>
SG Mode Select>
Read only field
Switchable graphics selection
[Muxless]
USB
Configuration>
Read only fields
USB Configuration, UBS Module Version, USB Controllers, and USB devices
Legacy USB
Support>
Enable- Supports legacy USB
Auto– disables legacy support, if no USB devices are connected
Disable-keeps USB devices available for EFI applications only
[Enabled, Disabled, Auto]
XHCI Hand-off>
XHCI ownership change claimed by XHCI driver. Note: this is a work around
for OS(s) without XHCI hand-off support.
[Enabled, Disabled]
USB Mass
Storage Driver
Support>
Enables or disables USB mass storage driver support
[Enabled, Disabled]
Port 60/64
Emulation>
Enables I/O port 60h/64h emulation support
Note: Enable for USB keyboard legacy support for non-USB aware OS(s).
[Enabled, Disabled]
USB Transfer
Time-out>
Displays timeout value for control, bulk and interrupt transfers
[1 sec, 5 sec, 10 sec, 20 sec]
Device Reset
Time-out>
Displays USB mass storage device start unit command time-out
[10 sec, 20 sec, 30 sec, 40 sec]
Device Power-
up Delay>
Displays maximum time taken for the device to report itself to the host
properly. Auto uses the default :root port 100 ms /hub port delay from hub
port descriptor.
[Auto, Manual]
